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Finding the Third Proportional to 200.75 and 255.25

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Solution

The third proportional to 200.75 and 255.25 is: 324.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.75 : 255.25 = 255.25 : x
  2. Step 2: Convert to fraction form
    200.75/255.25 = 255.25/x
  3. Step 3: Cross multiply
    200.75x = 255.25 × 255.25
  4. Step 4: Simplify right side
    200.75x = 65,152.56
  5. Step 5: Solve for x
    x = 65,152.56/200.75
  6. Step 6: Final answer
    x = 324.55

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.